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Grant support

This study was supported by grants from the Spanish Government, Ministerio de Economia y Competitividad (PSI2014-55316-C3-3-R; PSI2017-89389-C2-2-R; and PID2020-114521RB-C21/C22) and the Galician Government, Axudas para a Consolidacion e Estruturacion de Unidades de Investigacion Competitivas do Sistema Universitario de Galicia: GRC (GI-1807-USC. Ref: ED431-2017/27 and ED431C-2021/04). All with ERDF/FEDER funds.

Analysis of institutional authors

Rivas-Fernandez, Miguel AngelAuthor

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Neuroanatomical and neurocognitive changes associated with subjective cognitive decline

Publicated to:Frontiers In Medicine. 10 1094799- - 2023-02-02 10(), DOI: 10.3389/fmed.2023.1094799

Authors: Rivas-Fernandez, Miguel Angel; Lindin, Monica; Zurron, Montserrat; Diaz, Fernando; Lojo-Seoane, Cristina; Pereiro, Arturo X; Galdo-Alvarez, Santiago

Affiliations

Hlth Res Inst Santiago Compostela IDIS, Cognit Neurosci Res Grp, Santiago De Compostela, Spain - Author
Univ Santiago Compostela, Dept Clin Psychol & Psychobiol, Santiago De Compostela, Spain - Author
Univ Santiago Compostela, Dept Dev & Educ Psychol, Santiago De Compostela, Spain - Author

Abstract

IntroductionSubjective Cognitive Decline (SCD) can progress to mild cognitive impairment (MCI) and Alzheimer's disease (AD) dementia and thus may represent a preclinical stage of the AD continuum. However, evidence about structural changes observed in the brain during SCD remains inconsistent. Materials and methodsThis cross-sectional study aimed to evaluate, in subjects recruited from the CompAS project, neurocognitive and neurostructural differences between a group of forty-nine control subjects and forty-nine individuals who met the diagnostic criteria for SCD and exhibited high levels of subjective cognitive complaints (SCCs). Structural magnetic resonance imaging was used to compare neuroanatomical differences in brain volume and cortical thickness between both groups. ResultsRelative to the control group, the SCD group displayed structural changes involving frontal, parietal, and medial temporal lobe regions of critical importance in AD etiology and functionally related to several cognitive domains, including executive control, attention, memory, and language. ConclusionDespite the absence of clinical deficits, SCD may constitute a preclinical entity with a similar (although subtle) pattern of neuroanatomical changes to that observed in individuals with amnestic MCI or AD dementia.

Keywords

Alzheimer's diseaseAlzheimers-diseaseBrain atrophyBrain structural changesDementiEntorhinal cortexHippocampalImpairmentMemory complaintsOlder-peopleStructural magnetic resonance imagingSubjective cognitive complaintSubjective cognitive decline (scd)Surface-based analysisVolume

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Frontiers In Medicine due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2023, it was in position 57/329, thus managing to position itself as a Q1 (Primer Cuartil), in the category Medicine, General & Internal.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations provided by WoS (ESI, Clarivate), it yields a value for the citation normalization relative to the expected citation rate of: 1.15. This indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 14, 2024)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Field Citation Ratio (FCR) from Dimensions: 15.04 (source consulted: Dimensions Jun 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-06-13, the following number of citations:

  • WoS: 4
  • Scopus: 17
  • OpenCitations: 11

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-06-13:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 35.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 35 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 7.
  • The number of mentions in news outlets: 1 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.

Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Rivas Fernández, Miguel Ángel) .